Powder: -20°C for 3 years | In solvent: -80°C for 1 year
RS-127445 (MT500) 是一种可口服的高亲和力选择性5-HT2B 受体拮抗剂,pKi 为 9.5,pIC50 为 10.4,比作用于其他受体和离子通道的选择性高 1000 倍。
规格 | 价格/CNY | 货期 | 数量 | |
---|---|---|---|---|
2 mg | ¥ 258 | 现货 | ||
5 mg | ¥ 482 | 现货 | ||
10 mg | ¥ 747 | 现货 | ||
25 mg | ¥ 1,580 | 现货 | ||
50 mg | ¥ 2,470 | 现货 | ||
100 mg | ¥ 3,690 | 现货 | ||
1 mL * 10 mM (in DMSO) | ¥ 528 | 现货 |
产品描述 | RS-127445 (MT500) is a selective 5-HT2B receptor antagonist with pKi of 9.5 and pIC50 of 10.4, exhibits >1000-fold selectivity against other 5-HT receptors. |
靶点活性 | 5-HT2B:9.5(pKi), 5-HT2B:10.4(pIC50) |
体外活性 | RS-127445 is a novel high affinity, selective 5-HT2B receptor antagonist devoid of detectable intrinsic activity. RS-127445 is found to have nM affinity and 1000 fold selectivity for the 5-HT2B receptor. RS-127445 is thus among the highest affinity, most selective 5- HT2B receptor ligands. RS-127445 potently blocks the 5-HT evoked increase in inositol phosphate formation and blocks the 5-HT evoked increases in intracellular calcium concentrations with a potency 1000 times greater than that of yohimbine. [1] |
体内活性 | RS-127445 is readily absorbed with no obvious dose or route-dependent limitations and rapidly absorbed following both oral and intraperitoneal administration with peak plasma concentrations being achieved within 15 min of dosing. RS-127445 concentration in the plasma are proportional to the administered dose. RS-127445 administrated at dose of 5 mg/kg with approximately 60% of an intraperitoneal dose and 14% of the oral dose is bioavailable. RS-127445 concentration in the plasma is predicted to fully saturate accessible 5-HT2B receptors can be readily achieved and maintained in the rat. RS-127445 administered at 1 to 10 mg/kg with oral significantly inhibits visceral hypersensitivity up to 35 to 74% provoked by restraint stress. Oral RS-127445 produces a significant suppression of TNBS-induced visceral hypersensitivity (15 to 62% inhibition at 3 to 30 mg/ kg), although RS-127445 has no significant effect on the visceral nociceptive threshold of native rats. RS-127445 administrated orally with 1 to 30 mg/kg also dose -dependently reduce the restraint stress-induced defecation in native and TNBS-treated rats. [2]. RS-127445 inhibits colonic motility and defecation. [3] |
激酶实验 | Radioligand binding: The selectivity of RS-127445 for 5-HT2B receptors is examined by testing the compound for affinity at over 100 additional ion channel or receptor binding sites. CHO-K1 cells expressing human 5-HT2A, 5-HT2B or 5-HT2C receptors are harvested using 2 mM EDTA in phosphate buffered saline. Cell membranes are prepared by four cycles of homogenization and centrifugation (48,000×g for 15 min). Each assay is established so as to achieve steady state conditions and to optimize specific binding. For the 5-HT2A receptor, membranes from 1×106 cells are incubated with 0.2 nM [3 H]-ketanserin at 32 °C for 60 min. Nonspecific binding is determined using 10 μM methysergide. For the 5-HT2B receptor, membranes from 1.5×106 cells are incubated with 0.2 nM [3 H]-5-HT at 48 °C for 120 min. Nonspecific binding is determined using 10 μM 5-HT. For the 5-HT2Creceptor, membranes from 3×10 5 cells are incubated with 0.5 nM [3 H]-mesuler -gine at 32 °C for 60 min. Nonspecific binding is determined using 10 μM methysergide. Assays are terminated by vacuum filtration through glass fibre filters(GF/B) which has been pretreated with 0.1% polyethyleneimine. Total and bound radioactivity is determined by liquid scintillation counting. Greater than 90% specific binding is achieved in each of these assays. |
细胞实验 | RS-127445, vehicle or other antagonists are pre-incubated with 240 μl of HEK-293 cells expressing the human 5-HT2B receptor suspension at 37 °C for 20 min. HEK-293 cells are incubated with[3H]-myoinositol (1.67 μCi/ml) in 162 cm2 flasks overnight at 37 °C in an inositol free Ham's F12 medium containing 10% dialyzed foetal bovine serum. The cells are harvested, washed five times with phosphate bufffered saline and resuspended in inositol free Ham's F12 media at density of approximately 3×103 cells/ml. The reactions are initiated by addition of 5-HT. Sixty minutes later, the reactions are terminated by adding 50 μl of ice-cold 20% perchloric acid, chilled in an ice-water bath for 10 min and then neutralized with 160μl of 1 N KOH. Each sample is diluted with 2 ml of 50 mM Tris-HCl, pH 7.4 at room temperature. The aqueous portion (2.2 ml) is transferred onto Dowex AG1X8 columns (1 ml, 1 : 1, w/v) which has been washed with 5 ml of distilled water. The columns are then washed with 18 ml of distilled water and the inositol phosphates are eluted with 3 ml of 1 N HCl. The eluted radioactivity is determined by liquid scintillation spectroscopy using a Packard 1900CA analyzer. [1] (Only for Reference) |
别名 | MT500 |
分子量 | 281.33 |
分子式 | C17H16FN3 |
CAS No. | 199864-87-4 |
Powder: -20°C for 3 years | In solvent: -80°C for 1 year
Ethanol: 8 mg/mL (28.43 mM)
DMSO: 52 mg/mL (184.8 mM)
H2O: < 1 mg/mL (insoluble or slightly soluble)
可选溶剂 | 浓度 体积 质量 | 1 mg | 5 mg | 10 mg | 25 mg |
Ethanol / DMSO | 1 mM | 3.5545 mL | 17.7727 mL | 35.5454 mL | 88.8636 mL |
5 mM | 0.7109 mL | 3.5545 mL | 7.1091 mL | 17.7727 mL | |
10 mM | 0.3555 mL | 1.7773 mL | 3.5545 mL | 8.8864 mL | |
20 mM | 0.1777 mL | 0.8886 mL | 1.7773 mL | 4.4432 mL | |
DMSO | 50 mM | 0.0711 mL | 0.3555 mL | 0.7109 mL | 1.7773 mL |
100 mM | 0.0355 mL | 0.1777 mL | 0.3555 mL | 0.8886 mL |
对于不同动物的给药剂量换算,您也可以参考 更多...
请在以下方框中输入您的动物实验信息后点击计算,可以得到母液配置方法和体内配方的制备方法: 比如您的给药剂量是10 mg/kg,每只动物体重20 g,给药体积100 μL,一共给药动物10 只,您使用的配方为5% DMSO+30% PEG300+5% Tween 80+60% ddH2O。那么您的工作液浓度为2 mg/mL。
母液配置方法:2 mg 药物溶于 50 μL DMSO (母液浓度为 40 mg/mL), 如您需要配置的浓度超过该产品的溶解度,请先与我们联系。
体内配方的制备方法:取 50 μL DMSO 主液,加入 300 μL PEG300, 混匀澄清,再加 50 μL Tween 80,混匀澄清,再加 600 μL ddH2O, 混匀澄清。
您可能有的问题的答案可以在抑制剂处理说明中找到,包括如何准备库存溶液,如何存储产品,以及基于细胞的分析和动物实验需要特别注意的问题。
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